I'm building a terrarium and for some reason every time I measure the light varies from 2500 to 4500 fc's. I'm trying to figure it out, but I'm believing the 4500 fc's is the correct figure at the top of the structure.
I would like to find a shade cloth to bring the top back down to about 3000 fc's but know nothing about shade cloth.
What density should I be looking for and where can I find some cheaply?